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rAKA/src/model/time_step_solvers/time_step_solver_default.cc
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time_step_solver_default.cc
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/**
* @file time_step_solver_default.cc
*
* @author Nicolas Richart <nicolas.richart@epfl.ch>
*
* @date Wed Sep 16 10:20:55 2015
*
* @brief Default implementation of the time step solver
*
* @section LICENSE
*
* Copyright (©) 2010-2011 EPFL (Ecole Polytechnique Fédérale de Lausanne)
* Laboratory (LSMS - Laboratoire de Simulation en Mécanique des Solides)
*
* Akantu is free software: you can redistribute it and/or modify it under the
* terms of the GNU Lesser General Public License as published by the Free
* Software Foundation, either version 3 of the License, or (at your option) any
* later version.
*
* Akantu is distributed in the hope that it will be useful, but WITHOUT ANY
* WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
* A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
* details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with Akantu. If not, see <http://www.gnu.org/licenses/>.
*
*/
/* -------------------------------------------------------------------------- */
#include "time_step_solver_default.hh"
#include "dof_manager_default.hh"
#include "integration_scheme_1st_order.hh"
#include "integration_scheme_2nd_order.hh"
#include "mesh.hh"
#include "non_linear_solver.hh"
#include "pseudo_time.hh"
#include "sparse_matrix_aij.hh"
/* -------------------------------------------------------------------------- */
namespace akantu {
/* -------------------------------------------------------------------------- */
TimeStepSolverDefault::TimeStepSolverDefault(
DOFManagerDefault & dof_manager, const TimeStepSolverType & type,
NonLinearSolver & non_linear_solver, const ID & id, UInt memory_id)
: TimeStepSolver(dof_manager, type, non_linear_solver, id, memory_id),
dof_manager(dof_manager), is_mass_lumped(false) {
switch (type) {
case _tsst_dynamic:
break;
case _tsst_dynamic_lumped:
this->is_mass_lumped = true;
break;
case _tsst_static:
/// initialize a static time solver for callback dofs
break;
}
}
/* -------------------------------------------------------------------------- */
void TimeStepSolverDefault::setIntegrationScheme(
const ID & dof_id, const IntegrationSchemeType & type,
IntegrationScheme::SolutionType solution_type) {
if (this->integration_schemes.find(dof_id) !=
this->integration_schemes.end()) {
AKANTU_EXCEPTION("Their DOFs "
<< dof_id
<< " have already an integration scheme associated");
}
IntegrationScheme * integration_scheme = NULL;
if (this->is_mass_lumped) {
switch (type) {
case _ist_forward_euler: {
integration_scheme = new ForwardEuler(dof_manager, dof_id);
break;
}
case _ist_central_difference: {
integration_scheme = new CentralDifference(dof_manager, dof_id);
break;
}
default:
AKANTU_EXCEPTION(
"This integration scheme cannot be used in lumped dynamic");
}
} else {
switch (type) {
case _ist_pseudo_time: {
integration_scheme = new PseudoTime(dof_manager, dof_id);
break;
}
case _ist_forward_euler: {
integration_scheme = new ForwardEuler(dof_manager, dof_id);
break;
}
case _ist_trapezoidal_rule_1: {
integration_scheme = new TrapezoidalRule1(dof_manager, dof_id);
break;
}
case _ist_backward_euler: {
integration_scheme = new BackwardEuler(dof_manager, dof_id);
break;
}
case _ist_central_difference: {
integration_scheme = new CentralDifference(dof_manager, dof_id);
break;
}
case _ist_fox_goodwin: {
integration_scheme = new FoxGoodwin(dof_manager, dof_id);
break;
}
case _ist_trapezoidal_rule_2: {
integration_scheme = new TrapezoidalRule2(dof_manager, dof_id);
break;
}
case _ist_linear_acceleration: {
integration_scheme = new LinearAceleration(dof_manager, dof_id);
break;
}
case _ist_generalized_trapezoidal: {
integration_scheme = new GeneralizedTrapezoidal(dof_manager, dof_id);
break;
}
case _ist_newmark_beta:
integration_scheme = new NewmarkBeta(dof_manager, dof_id);
break;
}
}
AKANTU_DEBUG_ASSERT(integration_scheme != nullptr,
"No integration scheme was found for the provided types");
this->integration_schemes[dof_id] = integration_scheme;
this->solution_types[dof_id] = solution_type;
this->integration_schemes_owner.insert(dof_id);
}
/* -------------------------------------------------------------------------- */
bool TimeStepSolverDefault::hasIntegrationScheme(const ID & dof_id) const {
return this->integration_schemes.find(dof_id) !=
this->integration_schemes.end();
}
/* -------------------------------------------------------------------------- */
TimeStepSolverDefault::~TimeStepSolverDefault() {
DOFsIntegrationSchemesOwner::iterator it =
this->integration_schemes_owner.begin();
DOFsIntegrationSchemesOwner::iterator end =
this->integration_schemes_owner.end();
for (; it != end; ++it) {
delete this->integration_schemes[*it];
}
this->integration_schemes.clear();
}
/* -------------------------------------------------------------------------- */
void TimeStepSolverDefault::solveStep(SolverCallback & solver_callback) {
this->solver_callback = &solver_callback;
this->non_linear_solver.solve(*this);
this->solver_callback = NULL;
}
/* -------------------------------------------------------------------------- */
void TimeStepSolverDefault::predictor() {
AKANTU_DEBUG_IN();
TimeStepSolver::predictor();
IntegrationScheme * integration_scheme;
ID dof_id;
for(auto & pair : this->integration_schemes) {
std::tie(dof_id, integration_scheme) = pair;
if (this->dof_manager.hasPreviousDOFs(dof_id)) {
this->dof_manager.savePreviousDOFs(dof_id);
}
/// integrator predictor
integration_scheme->predictor(this->time_step);
}
AKANTU_DEBUG_OUT();
}
/* -------------------------------------------------------------------------- */
void TimeStepSolverDefault::corrector() {
AKANTU_DEBUG_IN();
TimeStepSolver::corrector();
IntegrationScheme * integration_scheme;
ID dof_id;
for(auto & pair : this->integration_schemes) {
std::tie(dof_id, integration_scheme) = pair;
const auto & solution_type = this->solution_types[dof_id];
integration_scheme->corrector(solution_type, this->time_step);
/// computing the increment of dof if needed
if (this->dof_manager.hasDOFsIncrement(dof_id)) {
if (!this->dof_manager.hasPreviousDOFs(dof_id)) {
AKANTU_DEBUG_WARNING("In order to compute the increment of "
<< dof_id << " a 'previous' has to be registered");
continue;
}
Array<Real> & increment = this->dof_manager.getDOFsIncrement(dof_id);
Array<Real> & previous = this->dof_manager.getPreviousDOFs(dof_id);
UInt dof_array_comp = this->dof_manager.getDOFs(dof_id).getNbComponent();
auto prev_dof_it = previous.begin(dof_array_comp);
auto incr_it = increment.begin(dof_array_comp);
auto incr_end = increment.end(dof_array_comp);
increment.copy(this->dof_manager.getDOFs(dof_id));
for (; incr_it != incr_end; ++incr_it, ++prev_dof_it) {
*incr_it -= *prev_dof_it;
}
}
}
AKANTU_DEBUG_OUT();
}
/* -------------------------------------------------------------------------- */
void TimeStepSolverDefault::assembleJacobian() {
AKANTU_DEBUG_IN();
TimeStepSolver::assembleJacobian();
IntegrationScheme * integration_scheme;
ID dof_id;
for(auto & pair : this->integration_schemes) {
std::tie(dof_id, integration_scheme) = pair;
const auto & solution_type = this->solution_types[dof_id];
integration_scheme->assembleJacobian(solution_type,
this->time_step);
}
this->dof_manager.applyBoundary("J");
AKANTU_DEBUG_OUT();
}
/* -------------------------------------------------------------------------- */
void TimeStepSolverDefault::assembleResidual() {
AKANTU_DEBUG_IN();
TimeStepSolver::assembleResidual();
IntegrationScheme * integration_scheme;
ID dof_id;
for(auto & pair : this->integration_schemes) {
std::tie(dof_id, integration_scheme) = pair;
integration_scheme->assembleResidual(this->is_mass_lumped);
}
AKANTU_DEBUG_OUT();
}
/* -------------------------------------------------------------------------- */
} // akantu
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